PDT to Seoul
+16hPDT
PDTSOURCESeoul
KSTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and KST on the World Map
The map below highlights the PDT (Pacific Daylight Time) and KST (Korea Standard Time) timezone regions across the globe.
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
KST – Korea Standard Time
UTC+09:00Korea Standard Time (KST) is the time zone for South Korea, 9 hours ahead of UTC.
- •South Korea does not observe daylight saving time.
- •Seoul is home to Samsung, LG, and Hyundai headquarters.
- •KST is the same offset as JST (UTC+09:00).
About Seoul
WikipediaSeoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
Seoul has the fastest average internet speed in the world.
PDT vs Seoul: Offsets, DST and Best Call Times
PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. Seoul runs on Korean Standard Time (KST) at UTC+09:00. That puts PDT 16 hours ahead of Seoul — a difference of +16h at the current offsets.
In practice, when it is 9:00 AM in PDT it is 1:00 AM in Seoul on the next day. Midnight in PDT is 4:00 PM in Seoul. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PDT to Seoul time conversion table
| PDT (PDT) | Seoul (KST) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | same day |
| 6:00 AM | 10:00 PM | same day |
| 7:00 AM | 11:00 PM | same day |
| 8:00 AM | 12:00 AM | next day |
| 9:00 AM | 1:00 AM | next day |
| 12:00 PM | 4:00 AM | next day |
| 3:00 PM | 7:00 AM | next day |
| 5:00 PM | 9:00 AM | next day |
| 6:00 PM | 10:00 AM | next day |
| 9:00 PM | 1:00 PM | next day |
Why people convert PDT to Seoul time
- Scheduling a call from PDT to Seoul: a 10:00 AM start in PDT lands at 2:00 AM in Seoul the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +16h gap: PDT and Seoul have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Seoul is 1:00 AM in PDT.
- Watching a live event or market open: PDT viewers need 1:00 AM in Seoul to catch a 9:00 AM start there, and 8:00 AM if the event is anchored to PDT.
- Always state the zone abbreviation, not just the hour. "3:00 PM PDT" is unambiguous; "3 PM" across a +16h gap is not.
- With a +16h gap there is no shared 9-to-5 window, so alternate the early start: one week PDT takes the early slot, the next week Seoul does.
About PDT (Pacific Daylight Time)
Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.
About KST (Korea Standard Time)
Korea Standard Time (KST) is the time zone used in South Korea. It shares the same UTC offset as Japan Standard Time but is a distinct time zone. South Korea does not observe daylight saving time. Seoul, the capital, is a major global tech and business hub.
Best time to call between PDT and Seoul
With a +16h offset there is no overlap inside a normal 9 AM – 5 PM day. Seoul opens at 9:00 AM KST, which is 1:00 AM in PDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PDT and Seoul have no shared working hours because of the +16h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PDT is 16 hours ahead of Seoul (PDT UTC-07:00 → KST UTC+09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Seoul
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between PDT and Seoul?
PDT (PDT, UTC-07:00) is 16 hours ahead of Seoul (KST, UTC+09:00). The gap is currently +16h.
How do I convert PDT time to Seoul time?
Add +16h to PDT local time. For example, 9:00 AM in PDT is 1:00 AM in Seoul (next day).
What time is it in Seoul right now?
Seoul uses KST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +16h offset from PDT.
What is the best time to call Seoul from PDT?
There is no shared working-hours window because of the +16h gap. The closest option is 1:00 PM in PDT, which is 5:00 AM in Seoul.
Which is ahead, PDT or Seoul?
PDT is 16 hours ahead of Seoul. When it is 12:00 PM in PDT it is 4:00 AM in Seoul.
Do PDT and Seoul use different time zones?
PDT uses PDT at UTC-07:00, while Seoul (South Korea) uses KST at UTC+09:00. The IANA identifiers are America/Los_Angeles and Asia/Seoul.
Does daylight saving time affect the PDT–Seoul difference?
Neither zone observes daylight saving time, so the +16h offset between PDT and Seoul is fixed all year.
Which other cities share PDT's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, Portland.
Which countries use PDT, PDT's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PDT and Seoul?
Sometimes. The +16h gap is large enough that 8:00 PM or later in PDT already falls on the next day in Seoul.
What is the time difference between PDT and Seoul?
Seoul is +16h from PDT.
What timezone is PDT in?
PDT operates on its local timezone.
What timezone is Seoul in?
Seoul operates on Korea Standard Time (KST), UTC+9, same as Japan. As a global tech and entertainment hub, Seoul coordinates with East Asian markets.
What are the business hours in Seoul?
Standard business hours in Seoul are 9:00 AM - 6:00 PM KST.
Which countries use PDT (Pacific Daylight Time)?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PDT observe daylight saving time?
Yes, PDT switches to PST during summer months.
What are some interesting facts about PDT?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
Which cities are in the KST timezone?
Major cities in the KST timezone include Seoul, Busan, Incheon, Daegu, Daejeon, Pyongyang.
What is the UTC offset for KST?
Korea Standard Time (KST) is at UTC+09:00.
What should I know about the KST timezone?
South Korea does not observe daylight saving time. Seoul is home to Samsung, LG, and Hyundai headquarters.
When is it midnight in PDT, what time is it in Seoul?
When it is 12:00 AM (midnight) in PDT (PDT), it is +16h later in Seoul (KST).
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See every conversion from PDT →·See every conversion from Seoul →